#!/bin/bash
# One-time, idempotent, NON-destructive migration of uploads + backups from a
# legacy bitnami discourse volume into the official image's /shared.
#
# Runs on every boot as a runit 1.d hook but no-ops after the first success
# (sentinel) and when there is no legacy volume mounted (fresh installs). It only
# ever COPIES from the read-only /legacy mount, so an interruption just re-copies
# on the next boot — there is no move/delete to leave the data half-migrated.
set -e

SENTINEL=/shared/.bitnami-uploads-migrated
[ -e "$SENTINEL" ] && exit 0

if [ -d /legacy/public/uploads ]; then
  echo "[migrate-uploads] copying bitnami uploads/backups -> /shared"
  mkdir -p /shared/uploads /shared/backups
  cp -a /legacy/public/uploads/. /shared/uploads/ 2>/dev/null || true
  cp -a /legacy/public/backups/. /shared/backups/ 2>/dev/null || true
  # discourse runs as uid 1000; the official boot also chowns /shared, but be explicit
  chown -R discourse:discourse /shared/uploads /shared/backups 2>/dev/null || true
  echo "[migrate-uploads] done"
fi

touch "$SENTINEL"